CVE-2018-19211

Public on

Last Modified: UTC

Description

The CVE Program describes this issue as:

In ncurses 6.1, there is a NULL pointer dereference at function _nc_parse_entry in parse_entry.c that will lead to a denial of service attack. The product proceeds to the dereference code path even after a "dubious character `*' in name or alias field" detection.

Statement

This vulnerability was rated as LOW severity because it requires the victim to open a specially crafted file. While it doesn’t allow full system compromise, it can cause the application to crash temporarily.

This vulnerability was rated as LOW severity because it requires the victim to open a specially crafted file. While it doesn’t allow full system compromise, it can cause the application to crash temporarily.

Additional information

  • Bugzilla 1652600: ncurses: Null pointer dereference at function _nc_parse_entry in parse_entry.c
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • FAQ: Frequently asked questions about CVE-2018-19211

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown
Red HatNVD

CVSS v3 Base Score

4.7

5.5

Attack Vector

Local

Local

Attack Complexity

High

Low

Privileges Required

None

None

User Interaction

Required

Required

Scope

Unchanged

Unchanged

Confidentiality Impact

None

None

Integrity Impact

None

None

Availability Impact

High

High

CVSS v3 Vector

Red Hat: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?

What can I do if my product is listed as "Will not fix"?

What can I do if my product is listed as "Fix deferred"?

What is a mitigation?

I have a Red Hat product but it is not in the above list, is it affected?

Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?

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